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Simplify is_event_after logic

This commit is contained in:
Luke Barnard 2017-04-12 14:36:20 +01:00
parent cf6121e3da
commit b9557064bf
2 changed files with 6 additions and 12 deletions
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5
synapse/handlers/read_marker.py
View File

@ -48,9 +48,10 @@ class ReadMarkerHandler(BaseHandler):
should_update = True should_update = True
if existing_read_marker: if existing_read_marker:
# Only update if the new marker is ahead in the stream
should_update = yield self.store.is_event_after( should_update = yield self.store.is_event_after(
existing_read_marker['marker'], event_id,
event_id existing_read_marker['marker']
) )
if should_update: if should_update:

13
synapse/storage/events.py
View File

@ -2161,18 +2161,11 @@ class EventsStore(SQLBaseStore):
@defer.inlineCallbacks @defer.inlineCallbacks
def is_event_after(self, event_id1, event_id2): def is_event_after(self, event_id1, event_id2):
is_after = True """Returns True if event_id1 is after event_id2 in the stream
"""
to_1, so_1 = yield self._get_event_ordering(event_id1) to_1, so_1 = yield self._get_event_ordering(event_id1)
to_2, so_2 = yield self._get_event_ordering(event_id2) to_2, so_2 = yield self._get_event_ordering(event_id2)
defer.returnValue(to_1 > to_2 and so_1 > so_2)
# Prevent updating if the existing marker is ahead in the stream
if to_1 > to_2:
is_after = False
elif to_1 == to_2 and so_1 >= so_2:
is_after = False
defer.returnValue(is_after)
@defer.inlineCallbacks @defer.inlineCallbacks
def _get_event_ordering(self, event_id): def _get_event_ordering(self, event_id):